I'm stumped ! I've been building & flying RC planes for . . . well let's just say that when I started the Dead Sea was only sick. Put about 30 flights on a new Aero-Works Edge 540 with a YS 1.20 four stroke on it. Plane flew pretty good, but needed a lot of right aileron trim. Also needed 8 oz. lead on the tail to balance properly at recommended cg. Plane tended to porpoise when I cut throttle for landing(had 3deg. Downthrust). In fact I had to ride down elevator to land.
After a recent surgical procedure, I had some time on my hands so I striped everything out of the plane, moved servos to the tail and got rid of all 8oz. of lead. Also went back and carefully checked wing incidence and thrust line. I am now confident that wing-engine-stab are all on same line (0 deg.). Also confident that all surfaces carefully zeroed with trim tabs centered. Went back to flying field. Still needs 4 clicks of right aileron. Plane balances along longitudinal axis on bench. Also plane "feels" nose heavy in flight and requires 3 clicks up trim, but when I move cg back even 1/4", the plane gets squirelly and wants to snap.

My thoughts -- The fact that the wing, stab, & thrust line are all at zero, and the plane still needs 3 clicks(1/8") of up trim would normally indicate a nose heavy condition. In addition, plane requires a fair amount of down input to maintain level when inverted. Again an indication of nose heavy. That's why I'm stumped, this is weird.

Give me some ideas.
Thanks

flying brick




that planes weighs a pound more than it was designed to . a four star will snap if it that much to heavy . take a pound out you will be able to jerk it around with the elevator .



WING TO LOADED

the position of elevator is not a good referrence for balance- when you flip to inverted, the geometry of the linkage plus looseness in connections and expo etc., all combine to require more hand movement than actual surface re positioning.
every thing you say, says - grossly tail heavy or and maybe very high wing loading.
set c/g at 25% of MAC- try again.
and make sure that the elevators move positively and easily in even very small movements.

I have a hanger 9 cap 232 that came out of the box with a warped wing. Needed lotsa aileron trim. Pulled the covering off the bottom and many of the ribs were barely glued, well if they were they weren't any more. Also, with the elevator servo's in the back, i needed a pound of nose weight, so now running single servo up front and pushrod. The plane is still a dog though. Good luck

it will snap chech out what went wrong with my friend Memeri Calmeoso go to www.3dbatix.com and do to videos and find the one "hey dude wake up" thats wht must be happing to you.

The Aeroworks Edge 540T they sell "90 size" is an overweight pig that does absolutely no 3D. I really wouldn't spend to much time involved with modifying and trying to get it work, I would buy a different plane. What many of my friends did.